THE PRINCIPAL indication for resection of the sternum and adjoining costal cartilages, either totally or in part, is neoplastic disease. There are a few instances of resections for tuberculosis, osteomyelitis and traumatic lesions, and on occasion a part of the sternum has been removed to gain access to retrosternal mediastinal tumors. We are now in process of collecting all reports of cases, and the series will appear in a later publication. In 108 cases thus far assembled the tumors were classified as follows: primary tumors—chondrosarcoma (12 cases), osteochondroma (1 case), fibromyxoma (1 case), chondromyxoma (3 cases), dermoid cyst (1 case), endothelioma (2 cases), osteogenic sarcoma (29 cases) and spindle cell sarcoma (6 cases)—and metastatic tumors—carcinoma (21 cases), hyponephroma (8 cases), lymphoblastoma (10 cases), myeloma (2 cases) and melanosarcoma (1 case). One of the earliest reports of an attempt to remove a tumor of the sternum was made by Holden